679722 has 8 divisors (see below), whose sum is σ = 1359456. Its totient is φ = 226572.

The previous prime is 679709. The next prime is 679733. The reversal of 679722 is 227976.

It is a sphenic number, since it is the product of 3 distinct primes.

679722 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 679722.

It is an unprimeable number.

679722 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56638 + ... + 56649.

It is an arithmetic number, because the mean of its divisors is an integer number (169932).

2⁶⁷⁹⁷²² is an apocalyptic number.

679722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679722 is a wasteful number, since it uses less digits than its factorization.

679722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113292.

The product of its digits is 10584, while the sum is 33.

The square root of 679722 is about 824.4525456326. The cubic root of 679722 is about 87.9246082936.

The spelling of 679722 in words is "six hundred seventy-nine thousand, seven hundred twenty-two".